PRE SLIA" VÈSTNIK éESKOSLOVENSKÉ BOTANICKÉ SPOLEéNOSTI , PRAZE. v vm 1929 ,, BULLETIN DE LA SOCIÉTÉ BOTANIOUE TCHÉCOSLOVAOUE À PRAGUE. Q L. ., •

K. DOMIN:

Generis Asplenii L. species duo novae africanae.

1. Asplenium pseudo-serra n. sp. ·

Elatum vel mediocriter altum, simpliciter pinnatum; strpes castaneus, glaber­rimus, antice sulcatus, postice teres; lrons coriaceo-chartacea, in sicco fuscescens, acuminata, major obovato-elliptica 19-juga, minor elliptico-oblonga et tantum 10-juga; pinnae rectae vel tantum apice aruminato subfalcatae, subdivaricatae, superiores erecto-patentes, breviter sed distincte petiolulatae, petiolulis paleaceis haud plus 2-3 mm longis instructae, insuper sat densae, inferne interstitiis 4-2 cm longis remotae, infimae oppositae, sequentes suboppositae sed plurimae alternae, mediae longissirnae, utrinque decrescentes, versus apicem gradatim et manifeste, versus basin parum sed di~tincte; pinnae mediae e basi cuneata inaequali (inferne magis minusve cuneato-exci~a) anguste lanceolatae, lateribus redae, distinde acuminatae, circa 8 cm (in fronde minori 51/2 cm) longae et supra basin 10-14 mm (resp. 9 mm) latae, duplicato-serratae, acumine grosse serrat;:ie, subtus ad costas sat copiose paleolatae; paleolae planae, pallidae (stra­mineo-brunnescentes), solidae (nec reticulatae), e basi lata, ovata vel ovato­lanceolata tenuissime acuminatae, saepe circa 4 mm longae et in venis in paleolas piliformes paucas (plerasque ,lam delapsas) sensim transeuntes; pinnae inferiores acutae nec acuminatae, infimae abbreviatae sed latiores, e basi cuneata deltoideo-lanceolatae, a j11go superposito plus quam 4 cm (in fronde minore plus 3 cm) distantes, 43/ 4 cm longa e et 11/ 2 cm latae (in fronde minore 31/ 2 cm X 1 cm); pinna terminalis elongata, anguste lanceolata et longe acuminat~, lobulato­incisa et dein grosse serrata, basi cum pinna infrapos1ta una vel cum pinnis duabus confluens et propterea dilatata et triloba rlobis lateralibus saltem quad­ruplo brevioribus qnam sE>gmentum terminale) vel unil(lba, ipsa basi cuneato­contracta; venatio Asplenii serra; venae subtus coloratae, supra prominentes et hanc ob causam p~•gina superiore in sicco striata; sori lineari-oblongi, circa 3-4 mm Iongi et 1 mm lati, secus costam biseriati, costae toti arcte appressi, remotiusculi; sori in serie utraque maturitate confluentes sed ob soros remotius­culos Jineam unam sed magis minusve interruptam efformantes.

Habitat in Arn1cA: Mainland W. of Zanzibar, J. T. Last 1885, Baker ut A. serra (typus in herbario Kewensi).

Species ab Asplenio serra sine ullo dubio optirne distincta et jam pinnis versus basin decrescenbbus et infra paleolaceis essentialiler discrepans, proba­bìliter area geographica majore vigens.

Ad fpeciem nostram forma sequens pertinere videtur: Bwamba, 2300 ped. alt., Flora of UGANDA no. 25 ut A. serra, leg. R. F y ff e,

Oct. 1925. Frons in specimine unica (an completa?) 23-juga, pinnis densioribus,

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in spemmme (an vero?) infimis tantum paulum brevioribus angustioribusque; paleolae characteristicae supra descriptae ad rhachidem dispersae, in peliolis copiosae, sed in frondis pagina superiore maxima ex parte delapsae.

2. Asplenium monilisorum n. sp.

Asplenium serra var. natalense Ba k. in H o o k.-B a k. Syn. Fil. 2. ed. 485 (1888) sensu em.

Elatum, viride (siccando pro parte fuscescens); rhizoma deest; frons circa 6 dm longa et 2 dm lata, in circumscriptione ovato-lanceolata, multijuga (circiter 28-juga), rigidiuscula sed tenuiter chartacea; pinnae alternae, distincte petiolu­latae, inferiores plus distantes (interstitiis 4-3 cm longis separatae), mediae et superiores densae, versus apicem gradatim, versus basin paulum decrescentes, rectae vel paulum falcatae, erecto-patentes, elongato-lanceolatae, Jonge tenuiter acuminatae, usque circa 11 cm longae et basi 2 cm latae, insuper g·labrae et nervis prominulis striatae, subtus ad costam hic inde paleola ab iis petioli baud diversa instructae, basi inaequales et inaequilaterae (dimidio superiore manifeste majore), basi in angulo fere recto cuneatae, Jatere basali superiore erecto, sub­obliquo vel fere recto et cum rhachide parallelo, Iatere basali inferiore hori­zontaliter exciso-truncato, praeterea basi superiore lobo late deltoideo, saepe acuto et lobulato-dentato auctae, caeterum regulariter inciso-pinnalifidae, lobulis protinus spectantibus, truncatis et antice inciso-dentatis; petioluli inferiores circa 3 mm longi; superiores breviores~ omnes paleolis pallidis, reticulatis, sca­riosis, nitidis, concavis, late ovatis et abrupte in acumen filiforme elongatum abeuntibus, circa 2 mm longis sat copiose instructi; sori numerosi (pinnae ab ipsa basi soriferae, tantum apice steriles, soris infimis fere in petioluluni tran­seuntibus), oblongo-ellipsoidei, biseriati, costae arcte appressi, in utraque serie inter se remotiusculi, circa 5- 6 mm (4-7 mm) longi et fere 2 mm lati, soris maturis utriusque seriei confluentibus.

A. serra speciei nostrae ob pinnas pinnatifidas omnino dissimiJe et praesertim propter paleolas baud arcte affine esse videtur. A. pseudo-serra, quamvis habitu valde dissimile, ob paleolas similes et pinnas basin versus decrescentes propius accedere videtm·.

Vidi specimina sequentia: 1. NATAL, ex herb. Mc Ken et Buchanan (comm. 1867) no. 24 (Baker

ut A. serra), typus speciei (herb. Kewense). 2. NATAL, (B u c han a n no. 84 (A. caudatum Forst. ex K uh n Reise Deck.

Bot: p. 33, 1879). Forma multo robuslior, foliis falcatis, caudato-attenuatis, jugis inferioribus

valde distantibus sed vix minoribus, caeterum baud diversa. 3. KENYA Colony, . Karuris, E. Kinobep, Febr. 1905, Imper. Forestry Instit.,

Herbar., s. n. Form<:t parum diversa, pinnis inferioribus inter se valde distantibus, infimis

manifeste brevioribus. 4. G. V o 1 k e n s, Flora des KILIMANDSCHARO, No. 1272, Oct. 1893, alt. 2000 m,

ut A. contiguum Kaulf. Forma parum diversa, tantum textura tenuiore insignis. 5. Africa tropica orientalis: Namuli, Makua country, J. T. La s t 1887. 6. S. E. Aberdare Forest, Kerita district, 7.000 ped. alt., H. M. G a r d ne r,

no. 971 (,,fronds 3-4 feet long").

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Forma forsan distincta, textura tenui insignis. Rhizoma, quod in specimine hoc adest, crassum est (diametro circa 4 mm latum) et densissime paleis pal­lidis, lucidis, reticulatis, fuscescenti-ferrugineis, iis Asplenii serra baud dissimi­libus obtectum.

Clarus Ba k e r (l. c. p. 485) var. natalensem ut sequitur describit: "pinnae pinnatifid throughout balf-way down to the rhachis, with sharply-toothed erecto­patent lobes; sori crowded against midrib. - Natal, Bue han a n".

A. serra, a cl. T ho ma s R. Si m (The Ferns of South Africa, Scc. edit., 1915) in p. 153 descriptum et in tabula 56 delineatum ad speciem nostram pertinet (cf. etiam B u c han a n' s List in Natal Colonist, 1875, no. 62; Lady Bar k l y 's List in Cape Monthly Magazin, 1875, no. 71; Si m, Ferns of South Africa, 1 st ed. p. 144, 1892). R. T. Si m scribit: "A. serra is a South American species with the margin inciso-serrate, and this deeply cut variety is its South African representative. lt occurs also on the Cameroon Mts". Secundum Si m species nostra in Natal et Rhodesia occurrit:

NATAL: Under the drip water in bush at southern terminus of Great Noodsberg only (B u c han a n): in two ravines at Little Noodsberg and at Inanda (W o od).

RHODESIA: Chimani mani Mta., 6500 feet (S w y n 11 erto n, No. 851) ; near Umtali (B. H. Ho 11a11 d).